Analysis

  • max time kernel
    44s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 21:34

General

  • Target

    9e43c6d09b6ec266044ac8aa2b8d2a8b6bc68985492d8b36f2819fc153be1b42.exe

  • Size

    4.4MB

  • MD5

    68feda9d44a28617e38ae9ac816aa375

  • SHA1

    d7e89c02af91e78cfd69b3b59e5a8c61a6c34d1b

  • SHA256

    9e43c6d09b6ec266044ac8aa2b8d2a8b6bc68985492d8b36f2819fc153be1b42

  • SHA512

    1f441b44a506bfdef6f10058016cdecee63abd7b4e2382b67c8e9a9b3fc8b3e143cbdeee203ed10f07555618df1eddcb73ffc9787120b3d21673c4d9ce2f83e1

  • SSDEEP

    49152:1Kk0d1vZSO6E3aDmxup4kdGKvghxfki1buc7SKpFZ8hpTQdKS:M/vZGQaWKcx7SKDZspsdK

Malware Config

Signatures

  • Registers COM server for autorun 1 TTPs 4 IoCs
  • Loads dropped DLL 3 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 8 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in Program Files directory 8 IoCs
  • Modifies Internet Explorer settings 1 TTPs 8 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9e43c6d09b6ec266044ac8aa2b8d2a8b6bc68985492d8b36f2819fc153be1b42.exe
    "C:\Users\Admin\AppData\Local\Temp\9e43c6d09b6ec266044ac8aa2b8d2a8b6bc68985492d8b36f2819fc153be1b42.exe"
    1⤵
    • Loads dropped DLL
    • Installs/modifies Browser Helper Object
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1396
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\U52YYPOkxhiOuc.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:276
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\U52YYPOkxhiOuc.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:764

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

3
T1112

Discovery

Query Registry

1
T1012

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\GoSave\U52YYPOkxhiOuc.dat
    Filesize

    4KB

    MD5

    6e786d964f09d36b23b054b2d3008221

    SHA1

    a9f940d650cc0482217d4b4ff145e99f5cdcf188

    SHA256

    22cbd6ceab2f54b5163a8d65594fb468e51835802fa4bf8b8e4d02e669e609bf

    SHA512

    1cddfe3bcd9ddaa4ec5756cb58eff304137c46948a889925eac76d9828de94254b715f3b495b29f6c5dc2b2bb1a26913c59c1f38c849d239af3c2bf16276c033

  • C:\Program Files (x86)\GoSave\U52YYPOkxhiOuc.tlb
    Filesize

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

  • C:\Program Files (x86)\GoSave\U52YYPOkxhiOuc.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\U52YYPOkxhiOuc.dll
    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • \Program Files (x86)\GoSave\U52YYPOkxhiOuc.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\U52YYPOkxhiOuc.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • memory/276-61-0x0000000000000000-mapping.dmp
  • memory/764-65-0x0000000000000000-mapping.dmp
  • memory/764-66-0x000007FEFBBF1000-0x000007FEFBBF3000-memory.dmp
    Filesize

    8KB

  • memory/1396-54-0x00000000760E1000-0x00000000760E3000-memory.dmp
    Filesize

    8KB

  • memory/1396-55-0x0000000000980000-0x0000000000A49000-memory.dmp
    Filesize

    804KB